Which of the following is a common barrier to good sleep?

Irregular sleep schedules are indeed a common barrier to achieving good sleep. When individuals do not go to bed and wake up at consistent times, it disrupts their body's natural circadian rhythm. This irregularity can lead to difficulties in falling asleep, staying asleep, or waking up feeling rested. Consistent sleep patterns help the body know when to feel sleepy and when to be alert, making it easier to fall into a healthy sleep cycle.

In contrast, an early bedtime and reducing electronic device usage contribute positively to sleep quality. Establishing consistent sleep routines also fosters better sleep hygiene, enhancing the ability to fall asleep and stay asleep. These practices can create an environment more conducive to restful sleep, unlike irregular sleep schedules that create confusion for the body regarding sleep timing.